Bluetooth 1.2compliant Range:up to 30 feet (10 metres) Frequency :2.4~2.480GHZ Transmitter Power :Class 2 Connection:Point to point Figure size:70.8mm*24.2mm*22.4mm Talk time: up to 6 hours Standby time: up to 200 hours Output power: 800 mah Security Encrypt Power consumption:30mah (working) 1mah(standby) Battery:120mah lithium-polymer battery inserted Charging time:About 2 hours Certification:CE approved Noise suppression, echo elimination and duplex sound for crystal clear quality calls